sex... duh!

I love having sex! But I can't get into with the guy I'm having it with... as a person he's great and I have super hardcore feelings that he doesn't reciprocate... we have sex once a week when he feels like it. I know I'm a booty call but how can I engage more in sex with him.. how can I get what I want out of our arrangement. I orgasm fine by myself but I don't feel comfortable telling him how to hit the right spot for me... Also he won't go down on me, he said he's done it before but I always do it for him and besides self pleasure the tongue is the only other way I get off... I just don't know what to do... help! I don't have a lot of friends to talk to about this... thanks in advance!!